Rivet-holder.



. H, E, Lw. BNET HOLDER. PPLIOATIOH FILED SEPT. v30, 1908.

fammi Nov. i6, 1909.

#13:11: Illu,

HENRY LAU, Ol? PGTTSTGWbL PENNSYLVANIA.

RIVET-HOLDER,

Specification of Letters Patent,

HBM).

.l-a tenter Nov. l t5;

Application filed September 30, 1908. Serial No. 455,484. y

To alt wumt it muy concer/i:

Be it linoivn that l. lli-:Nuff li, litt'. a citii non of the tinitcd States, residing at Pottetovvn, in the county of )lontgronicrjg State of Pennsylvania, have invented certain uevv and useful Improvements in Rivet-Holders; and I do hereby declare the following to be a lfull, clear, and exact description ot the invention, such as will enable others skilled in the art to which it appel-taille to make and use the saine.

This invention relates` to rivet holders, and commonly known vas dolly bars cmployed for holding against the heads of rivets, and more particularly in connection with automatic rivet'crs such as the various forms of pneumatic riveters uned in boiler shops. bridge building` and in the variour"y steel structuren or lniildi1\gs,uiul hasV Jfor one ot' its objects to simplify and improve the construction and increase the ctlicieucy and ut ilityol' devices of this character.

Another object of the invention is to provide a simply constructed device whereby the annoyance and concuseion produced in the dolly bar by the operation ot the 'iveter are obviated and the action and operation nnprovetl.

'With these and other objects in view the invention consists in a stock formed with a tubular portion and a solid portion, the tubular portion f. open at. one end and the ,olid portion reduced at` one end and. terminating in a handle loop extending laterally at, right an'fles to the longitudinal axis of the stock, a ie movzibly dieposed in the. open end of the tubular portion of the stock, a hammer movable within the casing and engaged by the die., and a spring between the inner end of the hammer and the solid portion of the stock.

l The invention further consists in a stock formed with a longitudinal tubular portion open at. one end and a solid tapering; portion with a handle loop extending laterally ,from 'the smaller cud thereof and at right angles to the Stock, a latch carried by the tubular portion of the etocl; and ope ino' through the Same, a the movable .in 'the tunulai.' por tion of the Stoch and. with a. longitudinal slot cngaojed by the latch= a hunnner-within thetubu tir portion and engaged by the die, and a spring between the hammer und th Solid portion of the st oc f.

The invention further consiste in certain t novel features of eonritruction as herea'lter i shown and dcscri'oed, and then spccilically pointed out in the. claims, and iu the drawings illustrating` the preferred embodiment of the invention7 Figure l is a sido elevation ot the improved device. Fig. 2 is 'a longi` tudinal sectional view olf the Same. Fig. 2) is a transverse section on the line m2-Voli Fig. 2.

ln the operation ot' heading;- rivets, particularly when hcatliujjgI rivets with pneumatic rivetere, the blown` upon the rivet produce' heavy jamI against; the bar which .is held againnt the rivet head, resulting in driving the bar away from the rivet head at. cach blow, and in manjY casca the hammer ot' the rivetcr st rilt'cn the lwoud lilou' belore thc bar can be brought buck against tln` ivet, the consctptence being that the rivet will "barili" Slightly :titer the rivet, l5 blocked. '.lhe result is that the rivetingl in incomplete :and docs not hold the members tirmly, land the train canned by this action it; injuritnzs to thc operatoi'ivln) holdsl the rivet bar. 'he heavy jarl thus produced also result, frequently in dannige to the handles.: and valves in the pneumatic riveters.

'lo olivi-ate the injurious action above noted is the principal object of the present. invention, the improved device operating to eiieetually prevent heavy, jars between the rivcter and the holdhmbar.

The improved implement comprise@` a stoel; formed ivith :i tubular portion l() and a Solid portion ll` the Solid portion tapering inwardly :it one end and provided with a laterally ttcndiug handle loop l2, the handle loop disposed at right angles to the axial line. of the stock, as showin rEhe tubular portion it) is open at .its outer end, and provided with a transverse aperture lil and niovably dieposed in the outer end ol.' the portion lt) is n die member ll havingr a coun# tereiulvY or cavity l5 in its head and with it longitudinal -alot lt'l in one sido opposite the aperture it, in; shown. Disposed within the, r portion .tl and bearing againstthe in; enit of the die il ie' a hannner ineinber l?, an d located "-vvithin tl. e tubular portion ll ot the stoel: is :t relatively heavy spring;

the ing thus heariiig at the ends been the hainrncr il' and the solid portion el in the outer .tace of tlv etoclt eide of the aperture 13 are channels llt) than one-half of the distance around the stock. Fit-ting through the aperture and into the slot 1G a latch member 20 constituting a lock or hitch whereby the die member` is prevented from beingr removed from the stock, While at the sume time free to move longitudinally thereof within the range of the slot, as hereafter explained. Fitting over the stock externally of the latch member 520 is e s )ring clip 2.1 having flanges :rt the ed,f ting into the seats 19, the clin extending onnd the stoel; more than omvhfzlt hereor, :o that when disposed in politi In around the stock With the lianges or ribs within the recesses, the clip will be retained in position by its own resiliency, as will be obvious.l By this arrangement it will he '.lbvious that the die i4 will be lneintnined yiclilobly in its outward position by the il prevented from removal by the lati L while et the same time the slot lll will permit longitudinal movement of the die and hammer against the pressure of the.

spring; 1S, when the rivet is actuated. .By this simple arrangement when e rivet either hot or cold is to be inserted the die l5 is plof-ed against the head of the rivetand held tir, ly in place by the operator who grnsps the body ot the stock with one hand Y:ind the handle loop l2 with the other lnind. The jars of the blows imparted to the rivet are absorbed by the spring 18 und not communicnted to the hands ot' 'the operator. 1iillhen the rapid blows ere imparted to the rivet the die le; will yield slightly and force the lnun" incr ll against the spring 18, the quick res action of the spring bringing `the hammer und the die back to their former positions bet'ore the rivcter mechanism imparts the second blow', the result beingr that all looseness of the rivetsis etiectuolly obviated, and all rivets perfectlynnd uniformly finished. The counters'iuk l5 fitting over the hond ot' the rivet enables the die to be held in position thereon with greater ease end certainty, nud likewise assists materially in forming the head when applied to hot rivets.

'l`hc fatigue incident to the operation of en implement thus described is very much reduced as the spring absorbs the heavy jars und thc double lotion of the spring maintains the rivet hoed firmly in position and eftectually prevents it from heel-ring prising :i tubular stock having en apertureC tlirtmrh Vone side a hammer s rin su its i 'ported Within said stock, a die bearing upon said hammer and slidable in seid stoclr sind provided with n longitudinal slot opposite the opening in the stock, e latch operating through the. aperture of said stock andu into theA 4slot of said die, and detachable means tor maintaining said hitch in position.

2. A device ot' the class described cornprising :t tubular stock having an aperture through one side, e hammer spring supported Within said stock, a die bearing upon said 'hammer end slidable in seid stock and provided with'n longitudinal slot opposite the opening in the stock, it latch operating through the aperture of seid stock and into the slot ot' seid die, und yieldelole menne de tnchnbly enga'mg said stock end meinte-ine ing said hitch in position.

B. A device of the class described come prising a.. tubular stock having nn aperture through one side and segmental channels in the stock et the opposite sides or' the sperture thereof, :t hammer spring supported within said stock, e die bearing upon seid hammer and slidable in seid stock and pro-- vided with a longitudinal slot opposite the opening in the stock, o latch operating through the aperture of seid stock end into the slot of said die, end zt resilient member bearingl around seid stock, and against seid latch and with inwardly directed ril en uitging in said channels :and maintained in position thereby.

ln testimony whereof, l utili; my turc. in presence ot'rtvvo witnesses.

HENRY E. lliiltU.

lVitnesses 0. L. Evans, A. Amnnrr Ennis. 

